Furnaceman

I design and supply combustion control systems using exclusively Horner APG kit. Horner inputs are scaled temperature x10 so 200 degrees is 2000 counts. If you are using a PID block to do the control, you need to scale this to 0 - 32000 for the PV, then the screen entry also needs to be scaled to 0-32000 for the SP. The control variable output appears as 0 - 32000 also, and this needs to be scaled to suit the particular output module you are using. For example, the SmartRail modules need 0-4000. Some use 0-32000 some 0-16000.

I have to work on a Schneider Electric based system for the first time. This is an incineration plant controlled by a Modicon 320 and Magelis HMI. The customer wants improvements to the screen design and some troubleshooting of an unreliable part of the logic. My understanding was that I need Vijeo Designer for the screen and Unity Pro for the PLC. I have obtained Vijeo Designer Lite and the customer has sent me a disk with the back-ups. I have an .stu file, and a .SwxCF file. Problem I have is that VD won't recognise the .stu file to import, although it's possible it's not saved in a decompilable form. Also, I understood SwxCF to be a GE Fanuc file extension. Does Unity Pro use the same format or have they sent me the wrong files? Forgive my ignorance but I'm a complete noob when it comes to Schneider. I use Horner APG or Allen Bradley usually.